CVE-2017-18873: Input Validation
First published: Fri Jun 19 2020(Updated: )
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to cause a denial of service (channel invisibility) via a misformatted post.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mattermost | <4.1.2 | |
| Mattermost | >=4.2.0<4.2.1 | |
| Mattermost | =4.3.0-rc1 | |
| Mattermost | =4.3.0-rc2 | |
| Mattermost | =4.3.0-rc3 | |
| Mattermost | =4.3.0-rc4 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2017-18873?
CVE-2017-18873 is classified as a high severity vulnerability due to its potential to cause a denial of service.
How do I fix CVE-2017-18873?
To fix CVE-2017-18873, upgrade to Mattermost Server version 4.3.0 or later.
What types of attacks can CVE-2017-18873 enable?
CVE-2017-18873 can enable denial of service attacks by allowing channel invisibility through misformatted posts.
Which Mattermost Server versions are affected by CVE-2017-18873?
CVE-2017-18873 affects Mattermost Server versions prior to 4.3.0, 4.2.1, and 4.1.2.
Are there workarounds for CVE-2017-18873 if I cannot update?
There are no recommended workarounds for CVE-2017-18873; updating to a secure version is essential.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/severity
- agent/author
- agent/references
- agent/weakness
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/mattermost
- canonical/mattermost
- version/mattermost/4.2.0
- version/mattermost/4.3.0-rc1
- version/mattermost/4.3.0-rc2
- version/mattermost/4.3.0-rc3
- version/mattermost/4.3.0-rc4